Resilient wheel.



W. F. EWALD.

RESiLIEN WHEEL.

APPLICAT'IUN FILED SEPT. 4, 19x

LQQQQQQ l Patented. Dec. 31, 1918.

. mima-gm Specification of Letters atent.

Patented Dec Si, tte.

Application filed September e, im?. Serial No. 189,470.

To @ZZ whom t may concern.'

Be it known that l, WiLLniM F. EWALD, a citizen of the United States, residing at J ava, inthe county of Walworth and State of South Dakota, have invented certain new and useful improvements in Resilient Wheels; and l do hereby declare 'the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates t0 improvements in resilientwheels; and, to this end, it consists of the novel devices and Combinations of devices 'hereinafter described and deiined in the claim.

En the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings,

.Figure 1 is a side elevation of the improved wheel, some parts being broken away and some parts being shown in section;

Fig. 2 is a view, principally in section taken on the line 2 2 of on an enlarged scale; and

Fig. 3 is a detail View with some parts sectioned on the line @if Fig. l,

The numeral 4; indicates the hub of the wheel and the numeral 5 `indicates the outer rim thereof. Projecting radially from the hub 4, is a multiplicity of screw-threaded studs 6, and projecting from the inner face of the outer rim 5, a multiplicity or" bosses 7 located on the same radial lines with the studs 6. Two-part spokes 8 connect the hub e and rim 5. rlhe inner members or' these spokes 8 are. tubular with outer end portions that tiare circumfercntially, with respect to the Wheel, and their inner ends are secured to the hub 4e by screwingthe same onto the studs 6. VEhe outer ends oi the Outer members of the spokes 8 are inserted into the bosses 7 and secured thereto by transverse pins 9.

Coiled spr? :lgs 10, mounted in the tubular inner members of the spokes 8, are coinpressed between the outer members oi said spokes and shoulders i1 formed in the inner members thereof. The outer members ci the spokes 8 are provided with joints i2, which permit their outer end port-ions to swing circumiierentially, with respect to the wheel, in the flaring end portions of the inner members oi the spokes to permit the required eccentric movement of the wheel hub 4, with respect to the outer rim 5, and thereby make the wheel resilient, under the action of the springs 10.

A sectional inner rim 13 rigidly and detachably connects the inner members of the spokes .at their outer ends and securely holds the same in their proper positions. As shown, the sections of the inner rim i3 are identical, one with the other, and each there of is hollow with open ends and rectangular in cross section. The open ends of the rim sections 13 embrace correspondingly formed bosses 1li, integrally formed with the inner members of the spokes 8, and are detach-l ably and rigidly secured thereto by machine screws i5. it will be noted that the inner side of each rim section 13 is made removable a-nd adords a cover plate 16. int-e-` graliy ormedwithin each rim section 13, is a transverse abutment 17.

Plungers 18 are mounted in seats i9 formed in the bosses 14- ior circumferential movement, with respect to the wheel` Each plunger 18 has journaled on one or" its ends a grooved roller or wheel 20 and which rollers extend into the flaring (rter end portion of the inner member of the spokes 8 and engage opposite lfaces of the outer end, portions of the outer members ofthe spokes 8. The other ends of these plungers 18 project into the hollow inner rim sections 13 and coiled springs 21 are compressed between said plungers and the'abntments 17. bviensiy, the plungers i8 yieldingly hold the outerend portions of the outer members of the spokes 8 circumferentially centered, with freedom. tor endwise movement.

From the above description, it is evident that by removing the cover plates 16, access may be had to the interior of the inner rim sections 13, thus'making it extremely easy 'to assemble the wheel or make repairs. lt will be noted that the sides oi2 the outer end portions oi the inner meml .s of the spokes S are made flat to fill the gaps between the inner rim sections 13, and thereby give the wheel a neat and finished appearance.

resilient Wheel having a hub, an outer rim, two-part spokes connecting the hub and outer rim, the inner members of the spokes being tubular and having outer end portions that flare circumferentially, the sides et inner members ot the spokes holding the outer members of the spokes against iaterc movement, hollow inner' rim sections having abutments and detaehably eonnectlng ad- 'jacent inner members 0i the spokes, springs under strain to move the outer members of the spokes radially outward,'said outer meinbers having joints arranged to permit their outer end portions to swing in the flaring end portions of the inner members of the spokes, opposing pairs of roller-equipped plungers mounted in seats formed in the inner members of the spokes With their rollersy directly engaging circumferentially opposite sides of the outer end portions vof the inner members of the spokes and with their other ends extending into the inner 15 rim sections, and springs compressed between the plungers and abutments.

In testimony whereof I atlix my signature in presence of two Witnesses.

WILLIAM F. EWALD. A*

Witnesses:

SIG. RosENTHAL, CHRIST MAAsz. 

